﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _3._3._6_静态构造函数
{
    internal class Program
    {
        static void Main()
        {
            Console.WriteLine($"User-perferences:BackColor is:{UserPreferences.BackColor}");
        }
    }
}
